. Fig. 39.—Peaclies showing liail injury. a physiological cliaracteristic or weakness peculiar to this variety. This form of fruit gumming appears very early, before the pit hardens. It is more abundant when the crop is light. Affected peaches usually have the condition known as "split pit," in which the stone is more or less cracked and the embryo degenerates into a gummy mass. To prevent fruit gumming of Phillips Cling peaches, in years of a light crop, thinning' should be delayed fully 5 weeks after the pit begins to harden. In years of heavy crop, it should be done at least 10 da
. Fig. 39.—Peaclies showing liail injury. a physiological cliaracteristic or weakness peculiar to this variety. This form of fruit gumming appears very early, before the pit hardens. It is more abundant when the crop is light. Affected peaches usually have the condition known as "split pit," in which the stone is more or less cracked and the embryo degenerates into a gummy mass. To prevent fruit gumming of Phillips Cling peaches, in years of a light crop, thinning' should be delayed fully 5 weeks after the pit begins to harden. In years of heavy crop, it should be done at least 10 days earlier than this. Hail Injury.—Peaches sometimes are much deformed, with numerous scars and pits (fig. 39) and masses of clear, hard gum on the surface. This is the effect of hail injury when the fruit was young. Internal Browning.—Occasionally in certain years or places, some- 23 Pqj. further information, see: Davis, Luther D. Delayed thinning as an aid in controlling the gumming of the Phillips Cling peach. California Agr. Exp. Sta. :l-14. 11 figs. 1937.
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